The NRS Boundary Shoe is a neoprene boot for canoeing and kayaking. The 5mm Upper is waterproof, preventing feet from getting soaked when putting in or crossing shallow waters your boat can't float through. Underfoot is a 7mm neoprene insole for additional warmth and the Outsole is grippy for traction on slippery rocks. Features of the NRS Boundary Shoe The waterproof 5-mm neoprene Upper has glued, blind-stitched and double-taped seams to keep your feet warm and dry Comfy 7-mm neoprene insole atop a High-traction wrap-up sole provides the protection and support you've come to expect fromfootwear 2-mm plastic shim for even more protection from sharp, pointy objects The ladder buckle strap at the top and the sturdy instep strap ensure the shoe stays in place even in the muckiest conditions Each shoe is factory tested to ensure waterproof Performance GlideSkin cuff